Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"Magnetic spectrometer"”.
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The UV laser calibration system for the L3 magnetic spectrometer
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1986.
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Data acquisition system design for the Alpha Magnetic Spectrometer experiment
Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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Measurement of Cosmic Ray Lithium Isotopes Using the Alpha Magnetic Spectrometer
… the unique detection capabilities of the Alpha Magnetic Spectrometer (AMS), the isotope fluxes of cosmic ray lithium in the rigidity range of 1.92 to 25 GV are presented. This work is based on 0.97 million ⁶Li and 1.04 million ⁷Li nuclei collected by the AMS over a 12.5 year period, and improves …
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A Double-Focusing Magnetic Spectrometer, Radiations From Silver-106, and Other Activities
Made available in DSpace on 2015-05-12T17:11:44Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0005220.PDF: 5633459 bytes, checksum: 904cd1abbd1289c21c48a94fbb59f3e0 (MD5) Previous issue date: 1953
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Measurement of secondary cosmic rays lithium, beryllium, and boron by the alpha magnetic spectrometer
Secondary cosmic rays are mainly produced by the collisions of nuclei with the interstellar medium. The precise knowledge of secondary cosmic rays is important to understand the origin and propagation of cosmic rays in the Galaxy. In this thesis, my work on the precision measurement of secondary …
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Measurement of cosmic antiprotons with the alpha magnetic spectrometer aboard the International Space Station
… flux ratio ( -p/p) made with the Alpha Magnetic Spectrometer aboard the International Space Station is presented. The measurement covers the absolute rigidity range from 1 to 450 GV, and is based on 3.49x105 -p events and 2.42x109 proton (p) events. This completes the measurements of the …
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The development of a cost-effective beam loss monitor for use at the K600 magnetic spectrometer at iThemba LABS
… beam loss monitor for use at the K600 magnetic spectrometer at iThemba LABS. To this end. the commonly used materials and technologies were reviewed and photo diodes were chosen because of their low price, high performance and ready availability. Experiments have been carried out and …
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Precision Measurements of Neon, Magnesium, and Silicon Flux in Cosmic Rays with the Alpha Magnetic Spectrometer on the International Space Station
Precise measurements of primary cosmic ray Neon, Magnesium and Silicon flux is important to understand the origins and propagation properties of heavy elements in the Galaxy. This thesis presents the measurements of Neon, Magnesium, and Silicon flux in the rigidity (momentum per unit charge) range …
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Development of the analyser module for the MIDAS Data Acquisition System operating on the K600 magnetic spectrometer at iThemba LABS, Cape Town
The focal-plane detector package at iThemba LABS, Cape Town, is reviewed and a new analyser module is developed. The mathematical methods employed by the analyser are also reviewed and the final system is calibrated and tested against experimental data taken at iThemba LABS, Cape Town.
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Low Pressure Focal Plane Detectors for the K600: A design study
Magnetic spectrometers and position-sensitive particle detectors have been used for a long time in experimental nuclear physics, with the K600 high-resolution magnetic spectrometer at iThemba LABS being an example of such a system. This dissertation presents a review of the K600 magnetic …
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Isospin dependence of the Ar+Ni fusion-evaporation cross section
… performance 4pi detector INDRA, coupled with the magnetic spectrometer VAMOS. Even if the results are very preliminary, the obtained fusion-evaporation cross sections behaviour gives a hint at the possible isospin dependence of the fusion-evaporation cross sections.
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Measurement of spin parameters A and Ann in np and pp elastic scattering at 6 G3V/c
… The recoil proton was measured by a conventional magnetic spectrometer, while the scattered neiitron/proton was detected in a brass-scintillator neutron converter/detector. Clean elastic signals were seen in both reactions. Our results on pp elastic scattering show that A and Ann are small and …
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A transition radiation detector and gas supply system for AMS
Alpha Magnetic Spectrometer is an experiment that will be on the International Space Station for three years. It will look for anti-matter and dark matter. Supersymmetric dark matter could produce an excess in the 10-300GeV positron spectrum. A 10-6 separation of positrons from the more abundant …
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Single proton transfer on 55Mn
… region (laboratory frame) using a k = 600 MeV magnetic spectrometer with a resolution of ~40 keV (full-width at half maximum). Spectroscopic factors associated with the observed transitions to twenty-four ⁵⁴Cr final states up to 6.107 MeV excitation were determined from local, zero-range …
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Search for antideuterons and strangelets in cosmic rays with AMS-01
AMS (the Alpha Magnetic Spectrometer) is a high-energy particle detector in space. An engineer- ing version of AMS, AMS-01, flew on the space shuttle Discovery for ten days in June 1998 and collected 108 cosmic ray events. This thesis extends the previous results of the AMS-01 flight by performing …
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A search for the reaction [mu]⁻ + Cu [arrow] e⁺ + Co
… following muon capture was performed using a magnetic spectrometer with magnetostrictive readout wire spark chambers. The time of flight through the spectrometer and energy loss in a scintillation counter were measured for each event. One event was observed, at momentum 89.9 ± 3.5 MeV/c, which …
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Measuring the lepton sign asymmetry in elastic electron-proton scattering with OLYMPUS
… in measurements of the proton's electromagnetic form factors. Alternating electron and positron beams, accelerated to 2 GeV, were directed through a windowless, gaseous, hydrogen target, and the scattered lepton and recoiling proton were detected in coincidence using a large acceptance …
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Precision Measurement of the Proton's Weak Charge using Parity-Violating Electron Scattering
… of 5.8◦ to 11.6◦ and then passed through a magnetic spectrometer and onto quartz Čerenkov detector bars. A detailed description of the theory and motivation behind the Qweak experiment is given. An overview of the Qweak apparatus and an in-depth discussion of the luminosity monitor …
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Recoil polarization measurements of the proton electromagnetic form factor ratio to high momentum transfer
The electromagnetic form factors of the nucleon characterize the effect of its internal structure on its response to an electromagnetic probe as studied in elastic electronnucleon scattering. These form factors are functions of the squared four-momentum transfer Q2 between the electron and the …
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Experimental and theoretical multi-channel study of direct nuclear reactions: a tool to provide data driven information on neutrino-less double-beta decay
… K800 superconducting cyclotron and the MAGNEX magnetic spectrometer at the INFN - Laboratori Nazionali del Sud, in Catania, are described in the present thesis. The data-reduction and theoretical analysis performed during the PhD period are detailed in the present thesis. They involve the cases …
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